One of the best gifts that a parent can currently give to their children is leaving an investment for them or teaching them about investment. There have been many topics about how teaching children about investment opportunities especially with bitcoins. From all those discussions, many of the opinions and perspectives are about not forcing your children to learn about bitcoin investment when they are too young.
Leaving bitcoin investments for your kids isn't really a good move. There are other investments "By the books " with very nice ROI. The problem is the risk involved in transferring hodlings. The internet can be a very dangerous place for those that are not properly informed. The only exception where leaving hodlings for your kids plays out safely is if they have proper understanding and interest in both privacy and Decentralisation. Else you may end up hodling for a random scammer or hacker to steal in the end..
Kids will grow and become teenagers. Whoever buys bitcoin for his kids will definitely teach them about bitcoin when the time comes. I don't see those things that you mentioned as an excuse of not buying bitcoin for your kids or pass on your bitcoin investment to your heir. All asset have risk and nobody came from heaven with decentralization.
We all learned how to keep privacy because we are using a decentralized currency. Our generation will pass on and our children generation will continue using bitcoin. If they don't learn, and adopt bitcoin, don't you think that bitcoin might crash someday. A lot of us came to this forum with zero knowledge on bitcoin but many have learned a lot. I have started a bitcoin investment for my kids already.